I also put this in the VOX Uploader because I tried both. 
I used Vox Uploader and Vox Universal on a PC to attempt to upload files and they are not appearing in my library.
I’ve previously uploaded lots of music successfully via both these methods although the Mac app seems most reliable. See attached screenshot of the successful uploads.
Can I get some assistance? I wonder if uploading via SFTP would be more reliable if that option could be made available? It seems like there is difficulty confirming uploads.
It would be great to be able to browse music by folder, not just tags based.